Vega Modbus-TCP, ASCII protocol Bedienungsanleitung PDF herunterladen (Seite 9)

2 ASCII protocol

Modbus-TCP, ASCII protocol • VEGAMET 391/624/625, VEGASCAN 693, PLICSRADIO C62

30768-EN-130701

2 ASCII protocol

2.1 Measured value enquiry via ASCII protocol

With the ASCII protocol you can enquire PC/DCS values via the

Ethernet or RS232 interface. Through the use of ASCII characters,

measured value enquiry is possible using simple terminal programs

such as HyperTerminal.

The PC/DCS values are retrieved by special commands. It is possible

to get the measured value in dierent resolutions, with/without unit or

with current date/time.

The activation of the ASCII protocol is carried out via the instrument

DTM under "Device settings - RS232 interface". For the ASCII proto-

col, the following interface parameters are default settings:

•

Coding system: 8 Bits, ASCII

•

Baud rate: 9600 Bits/sec

•

Data bits: 8

•

Parity: none

•

Stop bits: 1

For direct connection between signal conditioning instrument and

PC or DCS, the RS232 modem connection cable and an additionally

connected interlink cable from the scope of delivery will be required. If

connection is provided via modem, only the attached RS232 modem

connection cable is used. You will nd further information in chapter

"Connection".

The ASCII protocol is handled via the TCP/IP - Port 503. When us-

ing the terminal program HyperTerminal, the following settings are

required:

•

IP addr. of the signal conditioning instrument: 192.168.200.200

(default setting)

•

TCP/IP Port: 503

•

Connection: TCP/IP

Access via RS232

Access via Ethernet

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